The rotor (13) has a turbine blade, where the rotor is rotatably driven for conveying a fluid in axial or radial direction around a rotational axis. The rotor is elastically deformable in radial direction between a radially compressed condition and another radially expanded condition in a reversible manner. Independent claims are also included for the following: (1) an intraventricular blood pump with a lock； and (2) a method for providing an intraventricular blood pump.
